mod_md: v0.9.5:
     - New directive (srly: what do you expect at this point?) "MDMustStaple on|off" to control if
       new certificates are requested with the OCSP Must Staple extension.
     - Known limitation: when the server is configured to ditch and restart child processes, for example
       after a certain number of connections/requests, the mod_md watchdog instance might migrate 
       to a new child process. Since not all its state is persisted, some messsages might appear a
       second time in the logs.
     - Adding checks when 'MDRequireHttps' is used. It is considered an error when 'MDPortMap 443:-'
       is used - which negates that a https: port exists. Also, a warning is logged if no 
       VirtualHost can be found for a Managed Domain that has port 443 (or the mapped one) in
       its address list.
     - New directive 'MDRequireHttps' for redirecting http: traffic to a Managed Domain, permanently
       or temporarily.
     - Fix for using a fallback certificate on initial signup of a Managed Domain. Requires also
       a changed mod_ssl patch (v5) to take effect.
     - compatibility with libressl



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  length filter to avoid arbitrary memory consumption for streaming
  responses (e.g. large CGI script output).  Ensures C-L is still
  generated in common cases (static content, small CGI script output),
  but this DOES change behaviour and some responses will end up
  chunked rather than C-L computed.

PR: 61222
Submitted by: jorton, rpluem


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Creditis to Humbedooh for all the work.



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Procedure that I've used:

1) Copy https://httpd.apache.org/docs/trunk/mod/directives.html
   to a text file.
2) Generate a csv with something like 
   cat /tmp/trunk_directives | sort | tr "\n" ","
3) Replace the content of CONFIG_KEYWORDS in prettify.js
   with the list generated in 2)
4) Run the command the MINIFY command to generate prettify.min.js

This commit should hopefully allow a better syntax highlighting
in our docs examples.



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mod_ssl: properly initializing server for fallback certificates provided by mod_md.



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Based on the work of Bernard Spil <brnrd freebsd org>.

PR: 61512


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Fix mixed declarations and code [-Wdeclaration-after-statement].



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Reported by: Hanno Böck
PR: 61511



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This commit is a follow up of r1802040 based on Jacob's
feedback, namely inserting the FLUSH buckets only when
really needed and useful, not always.



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mod_md: added necessary CPPFLAGS for a2md build.



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mod_md: v0.9.2: new directive 'MDHttpProxy' to define a proxy for outgoing connection,
some minor bugfixes, twiddle the build system to avoid non-pic code generation.



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mod_ssl: Extending SSLEngine to alternatively get a list of add:port spec as used in VirtualHost.



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used only if registered at init time (httpd.conf).

Calling ap_method_register() in children processes is not the right scope
since it won't be shared for all requests.


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mod_md: avoid linking libmd.la twice



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mod_md: fix in Makefile to use EXTRA_INCLUDES for a2md build, so that APR headers from srclib are found.



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  *) mod_md: v0.9.1:
     - various fixes in MDRenewWindow handling when specifying percent. Serialization changed. If 
       someone already used percent configurations, it is advised to change these to a new value,
       reload and change back to the wanted ones.
     - various fixes in handling of MDPrivateKeys when specifying 2048 bits (the default) explicitly.
     - mod_md version removed from top level md_store.json file. The store has its own format version
       to facilitate upgrades.
 


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Note it is related to PR  59007



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  *) mod_http2: DoS flow control protection is less agressive as long as active tasks stay
     below worker capacity. Intended to fix problems with media streaming. 



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mod_ssl: using improved mod_md md_get_certificate optional function when available


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